What are the opposite words for luckily?

Antonyms are words that have opposite meanings. The antonyms for the word "luckily" include "unfortunately," "unluckily," "above all," and "regrettably." These words give a different meaning to the sentence and change the tone of the conversation. For example, instead of saying, "Luckily, the bus arrived on time," one might say, "Unfortunately, the bus was delayed." Both of these sentences give different meanings and set a different tone for the conversation. Antonyms help in adding variety and depth to the language and provide an effective way to express emotions through words.